Classic Manual Film Cameras
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By john_shriver · Posted
Seems quite possible that the rear lens element is a doublet -- two elements cemented together. Very typical for a Tessar formula lens, which is what this camera almost certainly has. The two "chips" you show may be an area where separation of the cement between the two elements started. Separation will cause a lot of reflection at the junction between the two elements. -
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By Bettendorf · Posted
I don't either. I brought the lens to work with me and took it to the x-ray guys in my department. The reading he got at the rear was in millirems (or converted to it) and then plugged that in to an exposure chart to see how dangerous it was. He said something like you would have to wear that camera and lens around your neck 24 hours a day for several months (or years?) before it would be a concern. That was about 14 years ago, but I wrote down all the facts. If I find where I put that I'll report back here. -
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By Bettendorf · Posted
What I did was open John Seaman's link, hover over forums, click S&D. At the top left click on '424 Captures'. Now it's slow going, with selecting a year, clicking the link in any day, and choosing from the various threads. Some are there, some are not. The good article on the M8 that I mentioned is in July, 30 of '08 in the right side menu. I had to open it and then refresh once or twice to get it to load correctly.
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